Question

two angles of triangle are70°and20°.find the third angle and tell what kind of triangle it is​

Answer 1

Answer:

70°+20°+x=180°

90°+x=180°

x=180°-90°

x=90°

therefore, the third angle is 90°

Answer 2

Answer:

Since , 2 angles of the triangle is 90°

therefore, it is an isosceles triangle

Step-by-step explanation:

let the 3rd angle be x.

b/q. 70+20+x=180(stat),90+x=180

x=180-90

x=90°